NAIA

Naia or NAIA may refer to the following:

• National Animal Interest Alliance, an animal welfare organization in the United States
• National Association of Intercollegiate Athletics, an athletic association that organizes college and university-level athletic programs
• North American Institute of Aviation
• Ninoy Aquino International Airport, the main international airport serving Metro Manila, Philippines
• Naia (skeleton), a Paleoamerican skeleton